CN204181248U - For the chair back wane lock mechanism of Revolving chair chassis - Google Patents
For the chair back wane lock mechanism of Revolving chair chassis Download PDFInfo
- Publication number
- CN204181248U CN204181248U CN201420538807.6U CN201420538807U CN204181248U CN 204181248 U CN204181248 U CN 204181248U CN 201420538807 U CN201420538807 U CN 201420538807U CN 204181248 U CN204181248 U CN 204181248U
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- lockplate
- bearing pin
- latch
- torsion spring
- plug housing
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Abstract
The utility model discloses a kind of chair back wane lock mechanism for Revolving chair chassis, comprise lockplate, torsion spring a, latch and plug housing, lockplate is provided with row's lockhole, lockplate and the 4th bearing pin are fixedly linked and are synchronized with the movement with the 4th bearing pin under the effect of seesaw, 4th bearing pin is one whole major axis, plug housing is in lockplate side and the base on plug housing and chassis is fixedly linked, latch slides and to intert on plug housing and to coordinate with lockhole, the first spring arm of torsion spring a is connected with latch, the second spring arm of torsion spring a is connected to a drive unit for driving torsion spring a to carry out back rotation.The utility model is provided with a lockplate and a latch, latch rotates according to a torsion spring to realize stirring to reach the object inserting or exit lockhole, the utility model to coordinate with a lockplate by means of only a latch and namely achieves seesaw and lock, and conveniently controls.
Description
Technical field
The utility model relates to swivel chair, office chair technical field, particularly a kind of chair back wane lock mechanism for Revolving chair chassis.
Background technology
Revolving chair chassis, also claims Revolving chair tray, is the vitals be contained in below swivel chair seat cushion, the lifting of seat cushion, and the elevation angle of backrest regulates and all relies on chassis.
Current Revolving chair tray is generally made up of parts such as top tray, lower joist, rotating shaft and spring assemblies, and after top rotary table and swivel chair seat back are fixed, swivel chair can do suitable reclining around the shaft, and can initiatively reply, and makes user have comfort.Such as, Chinese patent discloses a kind of pallet, and (patent No. is: 02287885.8), mainly comprise base plate, sliding seat, conical pipe and adjusting device, sliding seat is movably connected in base plate, in the middle of sliding seat, connect the conical pipe of air pressure rod, be welded on together with conical pipe in sliding seat by Taper Pipe fixed head; Described adjusting device includes adjusting rod, adjustable plate, torsion spring, torsion spring fixed head, and adjusting rod interts in sliding seat, and adjustable plate is fixedly connected on the one end in adjusting rod insertion sliding seat, the one side contact air pressure rod of adjustable plate, and another side is connected with torsion spring; The another side of adjustable plate is provided with spin-ended of adjustable plate.
The adjusting device of above-mentioned Revolving chair tray regulates by torque spring completely, and for the people that body weight is different, the power of required torque spring needs different, makes product not have good versatility.For this problem, the patent No. is: the Chinese patent of " 201020264417.6 " discloses a kind of adjustable revolving chair tray of rolling shaft, it utilizes the restoring force that the gravity conduction being carried in seat surface is backrest, and the people that substantially can realize meeting different weight uses and do not need to regulate.But be sitting in above-mentioned pallet is installed seat on backward reclining time, due to human body parts gravity by back rest supports and proportion progressively increase, the gravity being carried in seat surface is progressively diminished, the restoring force that then gravity is transmitted to backrest diminishes thereupon, cause the backrest restoring force when maximum reclining angle not enough, best restoring force cannot be reached.
A kind of Revolving chair chassis of special R & D design, comprise the base connecting gas bar, in order to the bracket of fixing seat support and the seesaw in order to connect the chair back, bracket is arranged in base, seesaw is arranged in bracket, bracket is connected with elasticity reset device, specifically, be installed with the first bearing pin in the middle part of seesaw and seesaw with the first bearing pin for rotating fulcrum, first bearing pin passes bracket and is connected with base, the bilateral symmetry of seesaw front portion is provided with first connecting rod, second connecting rod, one end of first connecting rod and seesaw front end are by the 4th hinge, the other end of first connecting rod and one end of second connecting rod by the 3rd hinge and the 3rd bearing pin be connected with bracket, the other end of second connecting rod is installed with the second bearing pin and the second bearing pin passes or is connected with base after avoiding bracket, the rail groove in order to guide bracket movement locus coordinated with the first bearing pin is offered in the bilateral symmetry of bracket, first bearing pin is located in rail groove.
Its principle adopts four-point linkage mechanism, and form the conduction of power, be rotating fulcrum in the middle part of seesaw, seesaw rear portion overturns under the effect of the chair back, seesaw front portion by linkage and bracket hinged and prize bracket obliquely, bracket and seesaw are formed and link; In this conducting structure, the chair back is connected and fixed on the driving force of seesaw as four-point linkage mechanism, the gravity that human body puts on seat support forms by the pin joint of four-point linkage mechanism and bracket the restoring force being applied to four-point linkage mechanism, and the driving force of four-point linkage mechanism and restoring force form Antagonistic Relationship; Therefore restoring force relies on less to the elastic-restoring force of elasticity reset device, is suitable for crowd wider, and the lighter or heavier people of body weight can stand up like a cork in reclining and reply.
But some people wishes seat back lock to identify oneself comfortable position at one, to carry out lunch break or to have a rest for a long time, so need to design a kind of seesaw locking mechanism to solve this problem, original intention seesaw is locked in a position identifying oneself suitable, has also just been fixed on by the chair back on corresponding position.
Utility model content
The utility model overcomes deficiency existing in above-mentioned prior art, provides a kind of seesaw locking mechanism that can lock the swivel chair chair back, thus can by seat back lock in any one fixing angle.
The technical solution of the utility model is achieved in that
A kind of chair back wane lock mechanism for Revolving chair chassis, comprise lockplate, torsion spring a, latch and plug housing, lockplate is provided with row's lockhole, lockplate and the 4th bearing pin are fixedly linked and are synchronized with the movement with the 4th bearing pin under the effect of seesaw, 4th bearing pin is one whole major axis, plug housing is in lockplate side and the base on plug housing and chassis is fixedly linked, latch slides and to intert on plug housing and to coordinate with lockhole, the first spring arm of torsion spring a is connected with latch, and the second spring arm of torsion spring a is connected to a drive unit for driving torsion spring a to carry out back rotation.Above-mentioned locking mechanism coordinates a lockplate namely to achieve seesaw locking by a latch, convenient control.
A kind of chair back wane lock mechanism for Revolving chair chassis, comprise lockplate, torsion spring a, latch and plug housing, lockplate is provided with row's lockhole, lockplate is connected with the extension one-body molded and in the same plane with lockplate, the two ends of described extension respectively with the first bearing pin, 4th pin sleeve is connected together, and extension is relative to the 4th bearing pin axial restraint, 4th bearing pin is one whole major axis, plug housing is in lockplate side and the base on plug housing and chassis is fixedly linked, latch slides and to intert on plug housing and to coordinate with lockhole, the first spring arm of torsion spring a is connected with latch, the second spring arm of torsion spring a is connected to a drive unit for driving torsion spring a to carry out back rotation.Lockplate has an extension, thus has elongated its arm of force, makes lockplate have enough support strengths, avoids producing bending or distortion, extends service life.
As preferably, described drive unit comprises supporting seat, driving lever and a stressed locating ring producing deformation, supporting seat is fixed on plug housing, and locating ring is fixed on supporting seat, and torsion spring a is enclosed within a screw, described screw is fixed on supporting seat, form slot in locating ring, be provided with a curved projection in the middle part of slot, locating ring inside is divided into two draw-in grooves by protruding arranging, one end of driving lever is stretched in locating ring through after base, and the other end of driving lever is exposed to outside base; This end that second spring arm and the driving lever of torsion spring a stretch into locating ring is connected, rotating lever, this end making driving lever stretch into locating ring moves on in another draw-in groove from a draw-in groove, thus drive torsion spring a to rotate simultaneously, under the elastic force effect of torsion spring a, the first spring arm pulls latch to insert corresponding lockhole or in lockhole, exits to realize locking, the unblock of latch.Drive unit have employed such structure, and not only structure is simple but also convenient installation.
As preferably, described lockplate to be in the middle part of the 4th bearing pin or near the position at middle part.Thus, seesaw is locked forced position and has transferred in the middle part of chassis, only coordinate a lockplate to control by a latch, not only facilitate plug-in position alignment accuracy, also make overall stressed evenly.
As preferably, the axes normal of the plane residing for described lockplate and the 4th bearing pin.
As preferably, the upper and lower end face of lockplate has been recessed to form with latch against the short slot coordinated, and latch stretches out and is stuck in the locking achieving seesaw initial angle and maximum angle in the short slot of upper and lower end face.
As preferably, on the 4th bearing pin, cover has plastic bushing, and plastic bushing is being truncated with intersection location place, extension thus is forming a breach, and described extension is stuck in breach just.Another 4th pinned connection has the spring of reset, one end of spring connects the 4th bearing pin, and the other end of spring hooks base, and the existence of plastic bushing not only can be avoided spring and the 4th bearing pin directly to contact sounding, but also serve the effect blocking lockplate and extension, kill two birds with one stone.
As preferably, described extension and the 4th bearing pin are welded and fixed.Lockplate and extension can be avoided along the 4th bearing pin thus to produce mobile.
Have employed the design starting point of the present utility model of technique scheme, theory and beneficial effect is:
The utility model is provided with a lockplate and a latch, latch rotates according to a torsion spring to realize stirring to reach the object inserting or exit lockhole, the utility model to coordinate with a lockplate by means of only a latch and namely achieves seesaw and lock, and conveniently controls.
And the rotatory force of torsion spring comes from a driving lever, make to stir locking, the unlocking motion that driving lever just can realize latch, structure is simplified and ingenious, easy to use.
Again furtherly, lockplate has an extension, the two ends of described extension are connected together with the first bearing pin, the 4th pin sleeve respectively, 4th bearing pin rotates around the first bearing pin, thus elongated its arm of force, make lockplate have enough support strengths, avoid producing bending or distortion, extend service life.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram on chassis in embodiment;
Fig. 2 is the explosive view of Fig. 1;
Fig. 3 is the schematic diagram that the latch of chair back wane lock mechanism in embodiment is in unlocked state;
Fig. 4 is the A portion enlarged drawing of Fig. 3;
Fig. 5 is the schematic diagram that the latch of chair back wane lock mechanism in embodiment is in initial angle lock-out state;
Fig. 6 is the schematic diagram that the latch of chair back wane lock mechanism in embodiment is in maximum angle lock-out state;
Fig. 7 is the overall structure schematic diagram that in embodiment, chassis is in initial angle at seesaw;
Fig. 8 is the overall structure schematic diagram that in embodiment, chassis is in maximum angle at seesaw.
Detailed description of the invention
Detailed description of the invention of the present utility model is as follows:
Embodiment: the reference azimuth first defining each parts of the utility model, the utility model by chassis and swivel chair when normal mounting uses, the front of swivel chair is front end, and the position that the rear of swivel chair comprises backrest place is rear end, the front end on chassis is the region away from seesaw, and the rear end on chassis is the region near seesaw.
The present embodiment provide firstly one can automatically reset Revolving chair chassis, as shown in Figure 1, 2, comprise spring 19, in order to connect gas bar base 1, in order to the bracket 2 of fixing seat support and the seesaw 3 in order to connect the chair back, bracket 2 is arranged in base 1, and seesaw 3 is arranged in bracket 2; Be installed with the first bearing pin 11 in the middle part of seesaw 3 and seesaw with the first bearing pin 11 for rotating fulcrum, first bearing pin 11 passes bracket 2 and is connected with base 1, the bilateral symmetry of seesaw 3 front portion is provided with first connecting rod 13, second connecting rod 14, first connecting rod 13 described is from lower to upper obliquely installed towards the direction close to seesaw 3, and second connecting rod 14 described is from lower to upper obliquely installed towards the direction deviating from seesaw 3.
It is hinged that the 4th bearing pin 16 is passed through in one end of first connecting rod 13 and seesaw 3 front end, the other end of first connecting rod 13 and one end of second connecting rod 14 are hinged and the 3rd bearing pin 15 interts in bracket 2 by the 3rd bearing pin 15, the other end of second connecting rod 14 is installed with the second bearing pin 12 and the second bearing pin 12 passes bracket 2 and is plugged on base 1 both sides, and on base 1, correspondence is fixed with two and forms support or the bearing 42 as axle bed to the second bearing pin 12; Because seesaw 3 drives bracket 2 to move by connecting rod, so offer the rail groove 17 in order to guide bracket 2 movement locus coordinated with the first bearing pin 11 and the hollow slots 18 in order to dodge the second bearing pin 12 when bracket 2 moves coordinated with the second bearing pin 12 in each symmetry in the both sides of bracket 2, rail groove 17 is also to make the first bearing pin 11, second bearing pin 12 can be located in rail groove 17 respectively with in hollow slots 18 through bracket 2, first bearing pin 11, second bearing pin 12 with offering of hollow slots 18.
3rd bearing pin 15 is two independently bearing pins, and the 4th described bearing pin 16 is one whole major axis, and the two ends of the 4th bearing pin 16 are connected with one end of first connecting rod 13 and seesaw 3 front end separately respectively.
Simultaneously, 4th bearing pin 16 linking springs 19, one end of spring 19 is connected with the 4th bearing pin 16, the other end of spring 19 hooks base 1, specifically, the position that the other end of spring 19 is connected with base 1 is in base 1 back-end region away from first connecting rod 13, second connecting rod 14, and be fixed with hook 54 in base 1 back-end region position, the other end of spring 19 hangs on described hook 54.Spring provides reset restoring force for bracket 2 moves.The benefit of such setting is: when seesaw rotates, the 4th bearing pin rotates around the first bearing pin, drives spring elongation.In this process, spring diminishes gradually relative to the arm of force (namely the first bearing pin is perpendicular to the distance of spring axis) of the first bearing pin, and the changes in amplitude of spring elongation is comparatively large thus make pulling force increase larger, by the matching relationship of spring tension and the arm of force, make in spring elongation process, spring evenly increases relative to the moment of the first bearing pin, the restoring force being transmitted to the chair back also increases gradually, people is in reclining process backward, the support force that back receives the chair back is even, experience pleasant, there will not be each stage restoring force of reclining backward too small or excessively cause uncomfortable problem.
For avoiding Metal Contact to send sound, on the 4th bearing pin 16, cover has plastic bushing 55, and one end of spring 19 hangs on plastic bushing 55, and the quantity of spring 19 can be selected according to actual needs.
As shown in Fig. 1 ~ 8, described chair back wane lock mechanism comprises lockplate 56, torsion spring a22, latch 23 and plug housing 24, lockplate 56 is provided with row's lockhole 21, lockplate 56 is connected with the extension 57 one-body molded and in the same plane with lockplate 56, the two ends of described extension 57 respectively with the first bearing pin 11, 4th bearing pin 16 connects together, and extension 57 is relative to the 4th bearing pin 16 axial restraint, described lockplate 56 is in the middle part of the 4th bearing pin 16 or the position at close middle part, and the axes normal of the described plane residing for lockplate 56 and the 4th bearing pin 16.
Extension 57 is relative to the 4th bearing pin 16 axial restraint, and that is extension 57 with the 4th bearing pin 16, relative displacement can not occur, and achieves this end and can have two kinds of modes:
As shown in Fig. 1,3,4, the first is that plastic bushing 55 sheathed on the 4th bearing pin 16 is being truncated with intersection location place, extension 57 thus is forming a breach 58, and described extension 57 is stuck in breach 58 just.
The second is welded and fixed in described extension 57 and the 4th bearing pin 16 intersection location place.
Plug housing 24 is in lockplate 56 side and plug housing 24 and base 1 are fixedly linked, latch 23 slides and to intert on plug housing 24 and to coordinate with lockhole 21, the first spring arm 25 of torsion spring a22 is connected with latch 23, and the second spring arm 26 of torsion spring a22 is connected to a drive unit for driving torsion spring a22 to carry out back rotation.
Described drive unit comprises supporting seat 59, driving lever 29 and a stressed locating ring 60 producing deformation, supporting seat 59 is fixed on plug housing 24, locating ring 60 is fixed on supporting seat 59 sidewall, torsion spring a22 is enclosed within a screw 39, described screw 39 is fixed on supporting seat 59, slot 61 is formed in locating ring 60, slot 61 is arranged by above-below direction, a curved projection 30 is provided with in the middle part of slot 61, locating ring 60 inside is divided into two draw-in grooves 62 by protruding 30 arrange, one end of driving lever 29 is stretched in locating ring 60 through bending after base 1, the other end of driving lever 29 is exposed to outside base 1, this end that second spring arm 26 and the driving lever 29 of torsion spring a22 stretch into locating ring 60 is connected, rotating lever 29, this end making driving lever 29 stretch into locating ring 60 moves on in another draw-in groove 62 from a draw-in groove 62, thus drive torsion spring a22 to rotate simultaneously, under the elastic force effect of torsion spring a22, the first spring arm 25 pulls latch 23 to insert corresponding lockhole 21 or in lockhole 21, exits to realize locking, the unblock of latch 23.
Again furtherly, consider limited space and maximum using lockplate 56 carries out spacing, as shown in Figure 5,6, upper and lower end face 63a, 63b of lockplate 56 have been recessed to form with latch 23 against the short slot 64 coordinated, and latch 23 stretches out and is stuck in the locking achieving seesaw 3 initial angle and maximum angle in the short slot 64 of upper and lower end face 63a, 63b.
The lower surface 63b of lockplate 56 can certainly be made level, to make itself and latch 23 against coordinating.
It should be noted that, chair back wane lock mechanism is not limited only to above-mentioned mechanical mechanism, and gas bar can also be adopted to lock at an arbitrary position; Reset except employing metal spring, can also adopt rubber spring or gas bar, also can be the combination of metal spring, the gentle bar of rubber spring.
Claims (8)
1. the chair back wane lock mechanism for Revolving chair chassis, it is characterized in that: comprise lockplate, torsion spring a, latch and plug housing, lockplate is provided with row's lockhole, lockplate and the 4th bearing pin are fixedly linked and are synchronized with the movement with the 4th bearing pin under the effect of seesaw, 4th bearing pin is one whole major axis, plug housing is in lockplate side and the base on plug housing and chassis is fixedly linked, latch slides and to intert on plug housing and to coordinate with lockhole, the first spring arm of torsion spring a is connected with latch, the second spring arm of torsion spring a is connected to a drive unit for driving torsion spring a to carry out back rotation.
2. the chair back wane lock mechanism for Revolving chair chassis, it is characterized in that: comprise lockplate, torsion spring a, latch and plug housing, lockplate is provided with row's lockhole, lockplate is connected with the extension one-body molded and in the same plane with lockplate, the two ends of described extension respectively with the first bearing pin, 4th pin sleeve is connected together, and extension is relative to the 4th bearing pin axial restraint, 4th bearing pin is one whole major axis, plug housing is in lockplate side and the base on plug housing and chassis is fixedly linked, latch slides and to intert on plug housing and to coordinate with lockhole, the first spring arm of torsion spring a is connected with latch, the second spring arm of torsion spring a is connected to a drive unit for driving torsion spring a to carry out back rotation.
3. the chair back wane lock mechanism for Revolving chair chassis according to claim 1 and 2, it is characterized in that: described drive unit comprises supporting seat, driving lever and a stressed locating ring producing deformation, supporting seat is fixed on plug housing, locating ring is fixed on supporting seat, torsion spring a is enclosed within a screw, described screw is fixed on supporting seat, slot is formed in locating ring, a curved projection is provided with in the middle part of slot, locating ring inside is divided into two draw-in grooves by protruding arranging, one end of driving lever is stretched in locating ring through after base, the other end of driving lever is exposed to outside base, this end that second spring arm and the driving lever of torsion spring a stretch into locating ring is connected, rotating lever, this end making driving lever stretch into locating ring moves on in another draw-in groove from a draw-in groove, thus drive torsion spring a to rotate simultaneously, under the elastic force effect of torsion spring a, the first spring arm pulls latch to insert corresponding lockhole or in lockhole, exits to realize locking, the unblock of latch.
4. the chair back wane lock mechanism for Revolving chair chassis according to claim 1 and 2, is characterized in that: described lockplate is in the middle part of the 4th bearing pin or the position at close middle part.
5. the chair back wane lock mechanism for Revolving chair chassis according to claim 1 and 2, is characterized in that: the axes normal of the plane residing for described lockplate and the 4th bearing pin.
6. the chair back wane lock mechanism for Revolving chair chassis according to claim 1 and 2, it is characterized in that: the upper and lower end face of lockplate has been recessed to form with latch against the short slot coordinated, and latch stretches out and is stuck in the locking achieving seesaw initial angle and maximum angle in the short slot of upper and lower end face.
7. the chair back wane lock mechanism for Revolving chair chassis according to claim 2, it is characterized in that: on the 4th bearing pin, cover has plastic bushing, plastic bushing is being truncated with intersection location place, extension thus is forming a breach, and described extension is stuck in breach just.
8. the chair back wane lock mechanism for Revolving chair chassis according to claim 2, is characterized in that: described extension and the 4th bearing pin are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538807.6U CN204181248U (en) | 2014-09-18 | 2014-09-18 | For the chair back wane lock mechanism of Revolving chair chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420538807.6U CN204181248U (en) | 2014-09-18 | 2014-09-18 | For the chair back wane lock mechanism of Revolving chair chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204181248U true CN204181248U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420538807.6U Active CN204181248U (en) | 2014-09-18 | 2014-09-18 | For the chair back wane lock mechanism of Revolving chair chassis |
Country Status (1)
| Country | Link |
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| CN (1) | CN204181248U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207520A (en) * | 2014-09-18 | 2014-12-17 | 浙江永艺家具股份有限公司 | Chair back and rocker locking mechanism for chassis of swivel chair |
| CN104939560A (en) * | 2015-03-26 | 2015-09-30 | 浙江永艺家具股份有限公司 | Damping adjusting device for chair seat of seat-back linkage chair |
| CN107625323A (en) * | 2016-07-18 | 2018-01-26 | 永艺家具股份有限公司 | A kind of carriage drive mechanism for chair bottom |
-
2014
- 2014-09-18 CN CN201420538807.6U patent/CN204181248U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104207520A (en) * | 2014-09-18 | 2014-12-17 | 浙江永艺家具股份有限公司 | Chair back and rocker locking mechanism for chassis of swivel chair |
| CN104207520B (en) * | 2014-09-18 | 2017-02-22 | 永艺家具股份有限公司 | Chair back and rocker locking mechanism for chassis of swivel chair |
| CN104939560A (en) * | 2015-03-26 | 2015-09-30 | 浙江永艺家具股份有限公司 | Damping adjusting device for chair seat of seat-back linkage chair |
| CN104939560B (en) * | 2015-03-26 | 2019-02-01 | 永艺家具股份有限公司 | A kind of damping adjustment device of back linkage chair seat |
| CN107625323A (en) * | 2016-07-18 | 2018-01-26 | 永艺家具股份有限公司 | A kind of carriage drive mechanism for chair bottom |
| CN107625323B (en) * | 2016-07-18 | 2024-04-26 | 永艺家具股份有限公司 | Bracket driving mechanism for office chair chassis |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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Address after: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee after: UE FURNITURE CO., LTD. Address before: 313300 Zhejiang City, Huzhou Province, Anji County, West Wing Road, No. 1 Patentee before: Zhejiang Yongyi Furniture Co.,Ltd. |